<script>
export default {
  data() {
    return {
      //这是登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      //这是表单的验证规则对象
      loginFormRules: {
        //验证用户名是否合法
        username: [
          { required: true, message: '请输入登录用户名', trigger: 'blur' },
          { min: 3, max:10, message: '用户名长度为3-10位', trigger: 'blur' }
        ],
        //验证密码是否合法
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max:15, message: '密码长度为6-15位', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    //重置登录表单函数
    resetLoginForm(){
      this.$refs.loginFromRef.resetFields();
    },

    //登录函数
    login(){
      this.$refs.loginFromRef.validate(async (valid) => {
        if (!valid) return;
        const {data: result} = await this.$http.post('login', this.loginForm);
        if (result.meta.status !== 200){
          this.$message.error("登录失败！用户名或密码错误")
          return;
        }
        this.$message.success("登录成功！");
        window.sessionStorage.setItem('token', result.data.token);
        await this.$router.push('/home');
      });
    }
  }
}
</script>

<template>
<div class="login_container">
  <div class="login_box">
<!--    头像区-->
    <div class="avatar_box">
      <img src="../assets/loginLogo.jpg" alt="头像">
    </div>
<!--    登录表单区-->
    <el-form ref="loginFromRef" label-width="0px" class="login_form" :model="loginForm" :rules="loginFormRules">
<!--      用户名-->
      <el-form-item label="" prop="username">
        <el-input prefix-icon="el-icon-user-solid" placeholder="请输入用户名" v-model="loginForm.username"></el-input>
      </el-form-item>
<!--      密码-->
      <el-form-item label="" prop="password">
        <el-input prefix-icon="el-icon-lock" placeholder="请输入密码" v-model="loginForm.password" type="password"></el-input>
      </el-form-item>
<!--      按钮区-->
      <el-form-item label="" class="buttons">
        <el-button type="primary" @click="login">登录</el-button>
        <el-button type="info" @click="resetLoginForm">重置</el-button>
      </el-form-item>
    </el-form>
  </div>
</div>
</template>

<style lang="less" scoped>
.login_container{
  background-color: #2b4b6b;
  height: 100%;
}

.login_box{
  width: 450px;
  height: 300px;
  background-color: #eee;
  border-radius: 30px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box{
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.buttons {
  display: flex;
  justify-content: flex-end;
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

</style>